scholarly journals WEAK CROSSABILITY BARRIER BUT STRONG JUVENILE SELECTION SUPPORTS ECOLOGICAL SPECIATION OF THE HYBRID PINE PINUS DENSATA ON THE TIBETAN PLATEAU

Evolution ◽  
2014 ◽  
Vol 68 (11) ◽  
pp. 3120-3133 ◽  
Author(s):  
Wei Zhao ◽  
Jingxiang Meng ◽  
Baosheng Wang ◽  
Lisha Zhang ◽  
Yulan Xu ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Ecological Speciation ◽  
The Tibetan Plateau ◽  
Pinus Densata ◽  
Hybrid Pine

Colonization of the Tibetan Plateau by the homoploid hybrid pine Pinus densata

2011 ◽  
Vol 20 (18) ◽  
pp. 3796-3811 ◽  
Author(s):  
BAOSHENG WANG ◽  
JIAN-FENG MAO ◽  
JIE GAO ◽  
WEI ZHAO ◽  
XIAO-RU WANG
Keyword(s):  
Tibetan Plateau ◽  
The Tibetan Plateau ◽  
Pinus Densata ◽  
Hybrid Pine ◽  
Homoploid Hybrid

14C AMS Dating of Wooden Cores from Historic Buildings for Archaeological and Dendrochronological Research in High Asia

Radiocarbon ◽  
2013 ◽  
Vol 55 (3) ◽  
pp. 1358-1365 ◽  
Author(s):  
A Scharf ◽  
A Bräuning ◽  
W Kretschmer ◽  
B Wegner ◽  
F Darragon
Keyword(s):  
Tibetan Plateau ◽  
Tree Ring ◽  
Species Level ◽  
The Tibetan Plateau ◽  
Historic Buildings ◽  
Pinus Densata ◽  
High Asia ◽  
Ams Dating ◽  
First Time ◽  
Occurrence Of Species

We had the opportunity to collect valuable wooden core samples from historic monasteries, temples, and secular buildings in 4 regions of High Asia, namely Dolpo (Nepal), ancient Nyangpo, Gyalrong/Minyag, and Lhasa and surroundings (all on the Tibetan Plateau, China). Tree species collected for dating include Pinus wallichiana (Dolpo), Juniperus tibetica, Pinus densata and several species of the genera Picea (spruce), Larix (larch), and Abies (fir) on the Tibetan Plateau, which could not always be determined to the species level due to the parallel occurrence of species of the same genus in these regions. Some of the wood samples were successfully dendro-dated with local tree-ring chronologies, but many could not, indicating a potentially higher age than the existing local chronologies. By accelerator mass spectrometry (AMS) dating and wiggle-matching 199 14C samples from 73 collected timbers, it was possible to date these wood samples with high precision, and important information about the possible time of construction of these important historic buildings was obtained for the first time. Floating chronologies of 14C-dated wood span the periods AD 650 to 900 in Dolpo and ∼200 BC to AD 420 on the Tibetan Plateau. Besides dating of the wood samples from these historic monuments, 14C AMS dating with wiggle-matching gives the opportunity to extend the range of the currently existing regional tree-ring chronologies for future environmental reconstructions on the Tibetan Plateau and the Himalayas.

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